arm64: dts: ti: k3-am65-main: add sd wp-invert into k3-am65 dtb

Fix a VFS: unable to mount roofs because of SD card is read only.
The error value(-30) means that the sd card is read only, but in fact the card isn't
write-protect. We add the wr-inverted into k3-am65-dts to change the return value for
getting the correct state, so that we can mount the rootfs normally and it works well.

Error log:
mmcblk1: p1 p2
md: Waiting for all devices to be available before autodetect
md: If you don't use raid, use raid=noautodetect
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
VFS: Cannot open root device "mmcblk1p2" or unknown-block(179,26): error -30
Please append a correct "root=" boot option; here are the available partitions:
0100 4096 ram0
(driver?)
0101 4096 ram1
(driver?)
0102 4096 ram2

Signed-off-by: Jun Miao <jun.miao@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>